simple_black_background, black and white theme, Sense of coordination, sense of order, mathematics beauty, (((cover design))),(((((cover art))))),((trim)), official art,
girl, solo, chess_girl, perfect_detail_girl, pretty, white hair, long hair, head flower,(delicate and beautiful eyes), looking at viewer, cute face, pretty face, blue_eyes, white skin, white body, navel, perfect body, body art, standing on, beautiful pose,
crystal_art, huge_black_crystal, blooming_effect, whit_magic_circle_behind_girl, White petal
